Ko te raupapatanga hohe: He raupapatanga o tētahi rōpū konganuku, mai i te mea kāore e tino tauhohe ki te mea e kaha ana te tauhohe, mēnā ka noho tahi me tētahi pūmatū hohe pērā i te wai, te hāora, te waikawa rānei (RP 2009:367). / Reactivity series: The arrangement of a group of metals in a sequence from very unreactive to those that react strongly with a reactant, such as oxygen, water or acid. (RP 2009:367).

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